Deck Seat/Hull seam repair on a 16' Snipe Sailboat

Pathfndr

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Joined
Jun 26, 2013
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3
I recently acquired a new to me snipe sailboat that was born 10 years before me. Its a 1964 Snipe. When I bought it I asked the guy about some soft spots on the deck, he assured me since there was no wood on the boat, it couldn't be dry rot etc. I should mention my goal generally is to get the boat out on the water so I can learn to sail.

photo.jpg

After getting the boat home, and on closer inspection I discovered the snipe was constructed of foam sandwiched between thin pieces of fiberglass. In two areas the bottom piece of fiberglass (I believe its fiberglass anyway) had separated from the side of the hull, allowing the foam to sag and depriving the deck of needed structural support. The one is the deck near the bow which isn't too bad, but more pressing is under the "seat" on the edge of the deck. Here is a poor drawing I made of the problem as well as a photo of where on the deck you would find the problem. It would be located under the guys butt in the second photo.

fg-seperation.jpg

fleetsnipe.jpg

When getting under the deck I can clearly see where it came off, but there is very little material (the flat part at the far right side of my drawing just below the arrow) where I could apply some sort of epoxy to "restick" it to the side with any hope of it being structurally sound. The angle where the deck meets the hull is also more severe than in my drawing. I can fit my fingers up in there but can't really see what I'm doing. In order to get the two to meet I could get a piece of 2X4 and a couple of car jacks to support it along the roughly 6' linear feet that needs to be reattached while doing the work....

Things I have considered:
1) overlapping some sort of material on the underside of the hanging material, epoxying that to the underside of the deck and down along the side. This would be the most like the original design but least structurally sound as the area of the deck it can reattach to is about 1"-2" wide. The fact I'm doing this down 6' might help though.

2) doing # 1 but then adding a 3" strip of marine grade plywood expoxied to the inside of the hull directly under the material to reinforce the foam and support my butt. More structurally sound but still replies on glue.

3) adding a strip of marine grade plywood horizontally under the foam, dropping 3-4 stainless carriage bolts and washers through the deck seat, foam and plywood and bolting it from below. Then adding the wood under it in option #2. This would put holes in the deck, be uncomfortable to sit on, look terrible, but probably be the most structurally sound.

While being mechanically inclined I should mention I have no experience working with fiberglass, but with some safety glasses and a respirator and willing to try anything. Any feedback or advice is greatly appreciated, since now I am now doubting the wisdom of my purchase.

Cheers!
 

Woodonglass

Supreme Mariner
Joined
Dec 29, 2009
Messages
25,932
Re: Deck Seat/Hull seam repair on a 16' Snipe Sailboat

Welcome to iBoats!
Your pics did not post. Best method is to open a Free photobucket account, upload your pics and then use the IMG Code to Paste your pics into iBoats.
WelcomeAboard.jpg
 

Pathfndr

Recruit
Joined
Jun 26, 2013
Messages
3
Re: Deck Seat/Hull seam repair on a 16' Snipe Sailboat

Welcome to iBoats!
Your pics did not post. Best method is to open a Free photobucket account, upload your pics and then use the IMG Code to Paste your pics into iBoats.
WelcomeAboard.jpg

Ok I think that's fixed :)
 

Woodonglass

Supreme Mariner
Joined
Dec 29, 2009
Messages
25,932
Re: Deck Seat/Hull seam repair on a 16' Snipe Sailboat

They make a 2 part pourable foam. A small kit will fix your boat pretty well. You could use a skil saw and cut out the fiberglass above the sunken area, pour in the expanding foam, let it do it's thing to fill the void, then trim it off and sand it back to form, then lay the cut out piece of glass back over the area and epoxy it back into place. Fill the cut with thickened epoxy filler Sand fair, then prime and paint and you'll never know it happened.
 

Pathfndr

Recruit
Joined
Jun 26, 2013
Messages
3
Re: Deck Seat/Hull seam repair on a 16' Snipe Sailboat

They make a 2 part pourable foam. A small kit will fix your boat pretty well. You could use a skil saw and cut out the fiberglass above the sunken area, pour in the expanding foam, let it do it's thing to fill the void, then trim it off and sand it back to form, then lay the cut out piece of glass back over the area and epoxy it back into place. Fill the cut with thickened epoxy filler Sand fair, then prime and paint and you'll never know it happened.

Woodonglass: I see the kit and I think that would be great after I reattached the underside that has come apart from the hull, so the foam has something to sit on. What is the best way to accomplish that?

Thanks!
 

harry-sail

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Joined
Jul 15, 2013
Messages
1
Re: Deck Seat/Hull seam repair on a 16' Snipe Sailboat

Woodonglass: I see the kit and I think that would be great after I reattached the underside that has come apart from the hull, so the foam has something to sit on. What is the best way to accomplish that?

Thanks!

I had a similar problem on an older Snipe. In the early years of foam core construction wasn't so hot. They used an open cell foam. The older open cell foam was prone to delamination and/or absorbing water. Sometime around 1980 the Snipe manufactures (and other boat manufactures) started using close cell foam. Closed cell foam solved the earlier problems. I repaired my soft deck by cutting out the bottom layer of fiberglass and getting rid of the old foam. I used a closed cell foam called airex. It was prescored in 1 inch sections so it would follow the contour of the underside of the deck. I think it is still made. The manufacturer was very helpful. My recollection is that I used a thickened polyester or epoxy resin and applied it to the underside of the deck with a notched trowel. I pressed the foam into it. I may have also wetted out the foam before bedding it in the paste. After that set, I wet out the foam with polyester (or maybe epoxy) resin, and put down a couple of layers of glass. I don't recall what type. It doesn't need to be pretty. You could also call West Systems, the epoxy manufacturer. They are unbelievably helpful and will have suggestions about how to do all this - unless you are already done.;)
 
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